DNS records update via Ansible

Laziness is King

I already had a semi-automatic way of getting the AAAA and PTR records to put on my zonefiles, from the VyOS router configs. However it involved logging in manually to each router, pulling the config then pasting each one onto a script.

Now, I (and StackOverflow and ChatGPT, of course) decided to quickly put together an Ansible playbook for it, along with a script for it. It’s all on my github.

I don’t want to repeat myself here, therefore I will paste the readme, it’s already markdown :)

vyos-dns-ipv6-generator-ansible

This is quite a simple and unpolished script based on vyos-dns-ipv6-generator

First, You must add your VyOS routers to your Ansible hosts file under “vyos_routers”. You can then run the playbook “ansible-playbook.yml” in order to copy all the router configs to the vyos_configs folder. Then go to the folder, ensure you update your FQDN and prefix under “pytodns_cfg.py”. Example:

#put your FQDN, here is mine
fqdn = "compumundohipermegared.one."

#now the uncompressed starting hextets of your prefix, example is mine.
prefix_sel = "2a0e:8f02:21d"

Then just run “dns_generator.py”. Example output from it:

----FORWARD ZONE----
dum0.OSR1GLASS1    IN AAAA    2a0e:8f02:21d0:ffff::90
eth2.OSR1GLASS1    IN AAAA    2a0e:8f02:21d1:dead::90
eth3.OSR1GLASS1    IN AAAA    2a0e:8f02:21d0:f00d::2:52
eth4.OSR1GLASS1    IN AAAA    2a0e:8f02:21d0:f00d::2:62
----FORWARD ZONE----
----REVERSE ZONE----
0.9.0.0.0.0.0.0.0.0.0.0.0.0.0.0.f.f.f.f.0.d.1.2.2.0.f.8.e.0.a.2.ip6.arpa.    IN PTR dum0.OSR1GLASS1.compumundohipermegared.one.
0.9.0.0.0.0.0.0.0.0.0.0.0.0.0.0.d.a.e.d.1.d.1.2.2.0.f.8.e.0.a.2.ip6.arpa.    IN PTR eth2.OSR1GLASS1.compumundohipermegared.one.
2.5.0.0.2.0.0.0.0.0.0.0.0.0.0.0.d.0.0.f.0.d.1.2.2.0.f.8.e.0.a.2.ip6.arpa.    IN PTR eth3.OSR1GLASS1.compumundohipermegared.one.
2.6.0.0.2.0.0.0.0.0.0.0.0.0.0.0.d.0.0.f.0.d.1.2.2.0.f.8.e.0.a.2.ip6.arpa.    IN PTR eth4.OSR1GLASS1.compumundohipermegared.one.
----REVERSE ZONE----

Quite easy :) Now you have easy copy-paste lines for your BIND Zonefile.